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Online since: March 2016
Authors: Li Hui Xue, Jian Ying Yu, Min Wu, Li Gao
Material and Experimental
Material The materials used in this study was Bitumen, AH-70.
Construction and Building Materials, 2009, 23: 2636-2640
Journal of Microscopy, 2011,242:37-45
Key Engineering Materials, 2012, 509: 194-202
Journal of Applied Polymer Science, 2013, 128(4): 2571-2577
Construction and Building Materials, 2009, 23: 2636-2640
Journal of Microscopy, 2011,242:37-45
Key Engineering Materials, 2012, 509: 194-202
Journal of Applied Polymer Science, 2013, 128(4): 2571-2577
Online since: October 2023
Authors: Maider Garcia de Cortazar, Franck Andres Girot Mata, Ignacio Laraudogoitia Blanc
S-N curve for both materials studied and their modified curves to meet with the fatigue criteria.
Goodman diagram for both materials and the gear situation for the studied load case.
As shown in fig. 7, the load case study for the gear was found to be suitable for both materials based on the Goodman criteria for fatigue analysis.
Diatom New Taxon File at the Academy of Natural Sciences (DNTF-ANS), Philadelphia.
Journal of Materials Processing Technology, 311. https://doi.org/10.1016/j.jmatprotec.2022.117811 [15] Dou, W., Zhang, L., Chang, H., Zhang, H., & Liu, C. (2021).
Goodman diagram for both materials and the gear situation for the studied load case.
As shown in fig. 7, the load case study for the gear was found to be suitable for both materials based on the Goodman criteria for fatigue analysis.
Diatom New Taxon File at the Academy of Natural Sciences (DNTF-ANS), Philadelphia.
Journal of Materials Processing Technology, 311. https://doi.org/10.1016/j.jmatprotec.2022.117811 [15] Dou, W., Zhang, L., Chang, H., Zhang, H., & Liu, C. (2021).
Online since: October 2011
Authors: Zbigniew Żurek, Artur Jaron, Aleksander Gil
Gil2,c
1Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland
2University of Science and Technology - AGH, al.
Ferritic steel of the Crofer22APU type belongs to the category of construction materials appropriate for the construction of inter-connectors in fuel cells of the SOFC type (Solid Oxide Fuel Cell).
Methods and material Crofer 22APU steel (24-Cr, 0.8-Mn, 0.5-Al, 0.5-Si in %wt) constituted the material for research.
Qadakkers for providing access to research materials.
Wood, Corrosion Science, 2, 173-196 (1962) [2] Badwal S.P.S., Deller D., Foger K., Ramprakash Y., Zhang J.P., Solid State Ionics 99, 297-310 (1997) [3] Quadakkers W.J., Piron-Abellan J., Shemet V., Singheiser L., Materials at High Temperatures 20(2), 115-127 (2003) [4] Tietz F., Buchkremer H.
Ferritic steel of the Crofer22APU type belongs to the category of construction materials appropriate for the construction of inter-connectors in fuel cells of the SOFC type (Solid Oxide Fuel Cell).
Methods and material Crofer 22APU steel (24-Cr, 0.8-Mn, 0.5-Al, 0.5-Si in %wt) constituted the material for research.
Qadakkers for providing access to research materials.
Wood, Corrosion Science, 2, 173-196 (1962) [2] Badwal S.P.S., Deller D., Foger K., Ramprakash Y., Zhang J.P., Solid State Ionics 99, 297-310 (1997) [3] Quadakkers W.J., Piron-Abellan J., Shemet V., Singheiser L., Materials at High Temperatures 20(2), 115-127 (2003) [4] Tietz F., Buchkremer H.
Online since: July 2014
Authors: Ma Jia Wu, Xiu Hua Chen, Zai Yu Zhang
Research of CoSiN Film as Diffusion Barrier in ULSI-Cu Metallization
Zaiyu Zhang 1, a , Majia Wu1,b Xiuhua Chen 2,c
1 College of Electronic and Information Engineering,Engineering Center of Avionics Electrical and Information Network, Anshun University, Anshun, Guizhou 561000, China
2 Department of materials science and engineering, Faculty of Physical Science and Technology, Yunnan University, Kunming 650091,China
azaiyuzhang@126.com, bwumajia@163.com, c chenxh@ynu.edu.cn
Keywords: CoSiN; magnetic sputtering; barrier layer; CoSiN/Cu/CoSiN/SiO2/Si
Abstract: CoSiN film can be used as diffusion barrier layer in ULSI-Cumetallization.
Introduction Copper has been extensively studied as an interconnect material for deep sub-micron circuits due to its superior electrical resistivity and resistance to electro-migration[1].
New refractory metal binary and ternary nitrides should be considered,cobalt- base nitrides are widely recognized as an attractive class of materials.
Cu Diffusion in Co/Cu/TiN Films for Cu Metallization [J],Journal of Materials Science & Technology, 22（3）(2006)332-335 [5]X.Qi, L.Yu, Jan Musschoot, et al.
Cao,et al.Effect of substrate temperature on the thermal stability of Cu/Zr-N/Si contact system[J].Materials Letters, 62(2008) 418-421
Introduction Copper has been extensively studied as an interconnect material for deep sub-micron circuits due to its superior electrical resistivity and resistance to electro-migration[1].
New refractory metal binary and ternary nitrides should be considered,cobalt- base nitrides are widely recognized as an attractive class of materials.
Cu Diffusion in Co/Cu/TiN Films for Cu Metallization [J],Journal of Materials Science & Technology, 22（3）(2006)332-335 [5]X.Qi, L.Yu, Jan Musschoot, et al.
Cao,et al.Effect of substrate temperature on the thermal stability of Cu/Zr-N/Si contact system[J].Materials Letters, 62(2008) 418-421
Online since: September 2010
Authors: Inocentiu Maniu, Valentin Ciupe, Steliana Vatau
With advances in science and technology, the interest to study the animals walking has
developed the demand for building the legged robots.
Based on this the cost of the project, materials required for fabrication and the number of actuators required can be determined.
H.: "Adaptive Dynamic Walking of a Quadruped Robot on Irregular Terrain Based on Biological Concepts", In The International Journal of Robotics Research, Vol. 22, No. 2, February 2003, pp. 187-202
J.: "The Mechanics of Quadrupedal Galloping and the Future of Legged Vehicles", In the International Journal of Robotics Research, Vol. 18, No. 12, December 1999, pp. 1224-1234 [6] Vatau S.: "The constructive - functional optimization for a quadruped mobile robot" (romanian language), PhD thesis, Ed.
Based on this the cost of the project, materials required for fabrication and the number of actuators required can be determined.
H.: "Adaptive Dynamic Walking of a Quadruped Robot on Irregular Terrain Based on Biological Concepts", In The International Journal of Robotics Research, Vol. 22, No. 2, February 2003, pp. 187-202
J.: "The Mechanics of Quadrupedal Galloping and the Future of Legged Vehicles", In the International Journal of Robotics Research, Vol. 18, No. 12, December 1999, pp. 1224-1234 [6] Vatau S.: "The constructive - functional optimization for a quadruped mobile robot" (romanian language), PhD thesis, Ed.
Online since: April 2021
Authors: Sergey Vasilievich Bochkarev, Igor Nikolaevich Kravchenko, Kyaw Myo Htet, Mary Alekseevna Prokhorova, Andrey Leonidovich Galinovskiy
The lack of high performance and efficient dispersion methods limits the possibilities for nanomodification of building materials.
Kurganova Study of technological processes for obtaining polymer composite materials: a tutorial, Moscow: Izd-vo MGTU im.
Provatorov, To the Question of Efficiency of Different Methods of Dispersion of Nanosecuring Suspensions, Materials Science Forum, 2020, vol. 990, pp. 139-143
Dodge Woodson, Concrete Materials, Concrete Portable Handbook, chapter 2, pp. 5-18
Synopsis, Nanotechnology in Concrete Materials, Transportation Research Circular, 2012.
Kurganova Study of technological processes for obtaining polymer composite materials: a tutorial, Moscow: Izd-vo MGTU im.
Provatorov, To the Question of Efficiency of Different Methods of Dispersion of Nanosecuring Suspensions, Materials Science Forum, 2020, vol. 990, pp. 139-143
Dodge Woodson, Concrete Materials, Concrete Portable Handbook, chapter 2, pp. 5-18
Synopsis, Nanotechnology in Concrete Materials, Transportation Research Circular, 2012.
Online since: November 2012
Authors: Fu Shen Ren, Su Li Chen, Zhi Gang Yao
Dynamics analysis and Vibration Suppression of a Flexible Rotation Beam
Fushen Ren1, a, Suli Chen1, b, Zhigang Yao2, c
1School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing, 163318
2Beijing Industrial Technician College, Beijing 100123
arenfushen@126.com, bslchen@163.com, cyzgmm@yahoo.com.cn
Keywords: Flexible Rotation Beam; Nonlinear Vibration; Transverse; Vibration Suppression
Abstract: This paper studies the complex transverse vibration behavior of drill string.
The Establishment of the Kinetic Equation For ease of analysis, the drill string is simplified to a rotating flexible beam; we define the beam axis before deformation as the X-axis, shown in Fig. 1: Fig. 1 The mechanical model of flexible rotating beam Selecting the displacement field as the following equation , , (1) Considering the huge geometric deformation , , (2) Consider that the drill string is made up of single material, so the simplified flexible beam the have two independent stiffness and,Simplify the force of the drill string at the drill as flexible beam axial force, the power's variation at corresponding displacement of , When rotate with angular velocity, flexible beam have to withstand the centrifugal force ,the variation of centrifugal force's power is , take advantage of Hamilton's principle to get the kinetic equation (3a) (3b) Where , , , , ,, For ease of analysis, introduce ,
GZ11A405 and The National Natural Science Funds under Grant N.O. 11002005.
Journal of Sound and Vibration, 2003, 259(1): 97-118,
Journal of Sound and Vibration, 2007: 307(23): 152-171,
The Establishment of the Kinetic Equation For ease of analysis, the drill string is simplified to a rotating flexible beam; we define the beam axis before deformation as the X-axis, shown in Fig. 1: Fig. 1 The mechanical model of flexible rotating beam Selecting the displacement field as the following equation , , (1) Considering the huge geometric deformation , , (2) Consider that the drill string is made up of single material, so the simplified flexible beam the have two independent stiffness and,Simplify the force of the drill string at the drill as flexible beam axial force, the power's variation at corresponding displacement of , When rotate with angular velocity, flexible beam have to withstand the centrifugal force ,the variation of centrifugal force's power is , take advantage of Hamilton's principle to get the kinetic equation (3a) (3b) Where , , , , ,, For ease of analysis, introduce ,
GZ11A405 and The National Natural Science Funds under Grant N.O. 11002005.
Journal of Sound and Vibration, 2003, 259(1): 97-118,
Journal of Sound and Vibration, 2007: 307(23): 152-171,
Online since: December 2010
Authors: Lu Ling An, Lai Shui Zhou, Wei Liu
The rough machining is performed by machining volumes of material in a slice-by-slice manner.
Acknowledgments The research was supported by the science and technology pillar program of Jiangsu Province (industrial parts) (BE2008136).
[2] Li Xueyi, Wang Xiaochun, Chen Song, Li Ruifang: Journal of Computer Aided Design & Computer Graphics, Vol. 15, No.3 (2003), p. 338-342
[3] Zhang libo Zhou Ji: Journal of Huazhong University of Science and Technology, Vol. 26 (1998), p. 15-17
Acknowledgments The research was supported by the science and technology pillar program of Jiangsu Province (industrial parts) (BE2008136).
[2] Li Xueyi, Wang Xiaochun, Chen Song, Li Ruifang: Journal of Computer Aided Design & Computer Graphics, Vol. 15, No.3 (2003), p. 338-342
[3] Zhang libo Zhou Ji: Journal of Huazhong University of Science and Technology, Vol. 26 (1998), p. 15-17
Online since: August 2014
Authors: Xiao Feng Ma
The material continuity equation can be defined as Equation (1)：
(1)
Where , , stand for the X-velocity component, the Y-velocity component and Z-velocity component, m/s. t is time, s. is density, kg/m3.
Combustion Science and Technology，1979
Journal of coal science and engineering，1998，4（2）:59~61 [8] Al-Farayedhi A A.Effect of Equivalence Ratio on the Concentration of CH4/NO2/O2 Combustion Products.
International Journal of Energy Research，1999，23
Combustion Science and Technology，1979
Journal of coal science and engineering，1998，4（2）:59~61 [8] Al-Farayedhi A A.Effect of Equivalence Ratio on the Concentration of CH4/NO2/O2 Combustion Products.
International Journal of Energy Research，1999，23